Bilge pump



July 19, 1949.

J. T. HAYWARD v BILGE PUMP Filed June 7, 1947 JT HAYWAR D IN V EN TOR.

ATTORNEY `of several conventional methods.

vmay and normally do include merely dipping out Patented July 19, 1949 UNITED STATES PATENT OFFICE BILGE PUMP John T. Hayward, Tulsa, Okla., assigner to I Iunt- Miller Co., Rochester, N. Y., a partnersh1p Application June 7, 1947, serial No. 753,148

and other operational purposes with the result that when it is necessary to bail out any water, operational duties must be interrupted to allow a crew member to bail out the water by any one Such methods the accumulated water with a can or bucket, which is necessarily slow and inefficient, or the Vuse of a conventional form of hand pump, generally of a plunger type; requiring the use of both hands for operation. In sail boa-t racing particularly, this type of interruption is very undesirable because it necessarily distracts the attention of the crew from the sailing operations which Furthermore, the commonly used plunger-type hand pumps frequently become fouled by vege tation and other trash which will accumulate in the bilges and ordinarily will require a kit of tools, generally not available on small boats, to dis-assemble them for cleaning. Such plunger vpumps normally tend to corrode in sea water, and 'since they employ sliding surfaces, such corrosion tends to increase the rapidity of the wear.

Among the principal'objects of this invention,

therefore, is the provision' of a novel and simple form of bilge pump which is adapted for operation by foot pressure; which is of very simple form, which can be assembled and dis-assembled substantially entirely with the hands, which has no machined or sliding surfaces, and which is not subject to corrosion by sea water.

A more specific object of the present invention is the provision of a form of bilge pump employing a compressible valve chamber having simple forms of intake and discharge valves, the chamvber being compressible and expandible in response to foot 4pressure to eiect the pumping operation.

' Other and more speclc objects and advantages of this invention will be apparent from the following detailed description when read in con- 1 Claim. (CIL 10S- 148) junction with the accompanying drawings which illustrate two useful embodiments in accordance with this invention.

In the drawings:

Fig. 1 is a generally schematic View showing the bilge pump in accordance vwith this invention positioned in the bottom of la4 boat'in ,operative position for pumping out the bilges;

Fig. 2 is a cross-sectional elevation through one embodiment of the pump in accordance with this invention;

Fig. 3 is a view looking upwardly toward the bottom of the pump along line 3-'3 of Fig. 2; and

Fig. 4 is a generally cross-sectionalelevation of another embodiment of a pump in accordance with this invention.

Referring to the drawings, the pump comprises a base plate I0 of generally circular form provided on its lower surface with a plurality of spacing feet II for spacing base plate IIJ from the bottom of the boat or other surface on Which bilge Water collects. rBase plate I il is provided with a peripheral upwardly and inwardly turned flange I2, the inner face of which forms a generally annular curved seat I3 about the periphery of the upper surface of the base plate. A plurality of passageways I4-I4 are provided in base plate I 0 and are preferably arranged ina wide pitch circle concentric about the center of the base plate. Passageways I 4-I4 constitute the intake valve ports of the .pump and may be provided in any suitable number and geometric arrangement and of any suitable diameter depending upon the pumping capacity desired. Mounted on the upper surface of base plate I0 and covering passageways I4 is a circular valve 'disk I5. A stud I6 extends through the center able exible material, such that its peripheral portion may be `flexed about center stud I6 to raise and lower relative to the upper surface of base plate I0 to open and close passageways I4. Valve disk I5 may, ofcourse, be of the more conventional plate valve form in which the valve disk is constructed' of a suitable thin `metal which floats on center stud I6 or is held thereon in normally closed position by a light spring. A hollow generally dome-shaped cup member I'I, constructed of rubber or other suitable resilient material, forms the valve chamber for the pump, and has its open mouth downwardly disposed onbase plate I0 enclosing the intake valve of the pump.

may be constructed without the use of any carefully machined parts, al1 of which is of great con-` venience and advantage to boat operators. By constructing the metal parts of bronze or admiralty metal and the other parts of rubber, as described, the entire pump will be resistant to salt Water corrosion.

It will be understood the various alterations and changes may be madeA in the details of the pump in accordance with this invention without departing from the scope of the appended claim but within the spirit of this invention.

What I claim and desire to secure by Letters Patent is:

A bilge pump, comprising, a circular base plate having an upwardly and inwardly turned peripheral lip, a plurality of intake ports through said base plate circularly arranged about the axis thereof, a circular valve disk constructed of iiexible material covering said intake ports and attached at its center to the center of said base plate, a hollow dome-shaped elastic rubber casing disposed in inverted position on said base plate and enclosing said valve, said casing having its open loWer end frictionally gripped by and beneath said lip to form a releasable fluid-tight connection therewith and held in position solely by said gripping action, the upper portion of said REFERENCES CITED The following references are of record in the le of this patent:

UNITED STATES PATENTS Number Name Date 212,898 Class Mar. 4, 1879 854,670 Schiodt May 21, 1907 1,219,714 Eberly Mar. 20, 1917 2,267,280 Kuhnel Dec, 23, 1941 2,368,091 Andersen Jan. 30, 1945 

